Machine for straightening bent pipes, rods, &amp;c.



J, c. OLLARD. .MACHINE FOR STRAIGHTENING BENT PIPES, RODS, 8L0. APPLICATION FILED JAN- 30,19l9. RENEWED JAN. 31,1920- 1 400 7 4 Patented Dec. 20, 1921.

6 SHEETS-SHEET l.

Elma/M10: Jaa. 6. Ollard J. C. OLLARD.

MACHINE FOR STRAIGHTENING BENT PIPES, RODS, &c. APPLICATION FILED IAN. 30, ms. RENEWED JAN. 31.1920.

1 300,764, Patented Dev. 20, 1921.

6 SHEETSSHEET 2- M M225. 6 Ollczrd abtowws J. C. OLLARD.

MACHINE FOR STRAIGHTENING BENT PIPES, RODS, 64c. APPLICATION FILED IAN. so. 1919. RENEWED JAN. 31, I920.

1,400,764 Patented Dec. 20, 1921.

6 SHEETSSHEET 3.

Swmm/ Io'o Jasd C. Ollard mama/13$ 1. c. OLLARD. MACHINE FOR STRAIGHTENING BENT PIPES, RODS, 6L0. APPLICATION FILED IAN. 30,19l3- RENEWED JAN. 31,1920.

1 A130,? {6%. Patented Dec. 20, 1921.

6 SHEETS-SHEET 4.

M 1 AM wue wtoz Jaa. Q Ulla rd 1,0. OLLARD. MACHINE FOR STRAIGHTENING BENT PIPES, RODS, &c. APPLICATION FILED JAN. 30,1919- RENEWED JAN 31, 1920.

1,400,764, Patented Dev. 20, 1921..

6 SHEETS-SHEE1' 5- 5m E g J. C. OLLARD.

MACHINE FOR STRAIGHTENING BENT PIPES, RODS, &c. APPLICATION man JAN.30..1919. RENEWED JAN. 31.1920.

1 IOOJTSQ Patented Dec. 20, 1921.

6 SHEEN-SHEET 6.

illlllli'llllll-k mm a woemlioz J45. Ulldrd Clttoqmuag JAJJEES G. OLLARD, F TACOMA, WASHINGTON.

MACHINE FOR STRAIGHTENING BENT PIPES, BGIDS, @w.

Specification of Letters Patent.

Patented Dec. 26', ti 23i.

Application filed January 30, 1919, Serial No. 273,952. Renewed January 31, 1920. Serial No. 355,410.

To all whom it may concern:

Be it known that 1, James C. OLLARD, a citizen of the United States, and resident of the city 01'? Tacoma, county of Pierce, and State or": l'vashington, have invented certain new and useful Improvements'in Machines tor Straightening Bent Pipes, Rods, &c., of which the "following is specification.

My invention relates to machines which are intended for straightening pipes, rods, and other such products which have been bent from a straight condition.

The object of my invention is to produce a machine which will act upon pipes, rods,

15 and the like which are bent, so as to straighten them and put them into a condition in which they may be used. A further object 01 my invention is to provide a machine for doing this work which will do the same more rapidly and more perfectly than by other methods which are in common use.

My invention consists of a machine having two principal parts. One part which first receives the bent pipe, has working parts consisting of a series of grooved rolls, these rolls being disposed in pairs and placed close together and so that the grooves in opposite rolls of a pair come together and provide openings of sizes to rather closely fit the r 0 different sizes of pipes or rods.

The other principal part of the machine consists of a revolving frame which is provided with hollow journals, through which the pipe may pass, and carries a series of small rolls placed with their ares approximately parallel with the axis or" rotation of the frame and so positioned radially of the :t'rame, that they will engage the outer surface of the pipe. These rolls, in revolving about the pipe, roll out the small kinks and reads and deliver the pipe straight and having a smooth surface.

The particular part of my invention, which i: deem to be new and desire to cover by patent, will be described in the following specification and then more particularly delined in the claims which terminate this specification.

In the accompanying drawings l have shown my invention embodied in the type of construction which I now prefer to use.

Figure l is a side elevation of the machine.

Fig. 2 is a plan view of the machine.

Fig. 3 is an end view of the machine, the same being taken from the end which first receives the pipe.

Fig. at is a side view of the receiving end of the opposite side of the machine from that shown in Fig. 1.

Fig. 5 is a longitudinal sectional elevation of the machine, showing the pipe in place.

Fig. 6 is an end elevation of the end of the machine from which the pipe issues after having been straightened.

Fig. 7 is a transverse section through the revolving frame.

Fig. 8 is a detail, showing in plan view, the means employed for laterally adjusting the base "frame upon which the latter half of the machine is mounted, so as to make it conform in location with the different sets of grooves in the primary rolls.

l ig. 9 is a sectional elevation of the mechanism used to hold this adjustable frame in adjusted position.

Fig. 10 shows the small rolls which are contained in the latter half of the machine and the means for supporting the same, other portions of the mechanism being omitted to avoid confusion.

Fig. 11 is cross sectional elevation showing the mechanism employed in the final straightening oi the pipe.

12 is a sectional detail showing the manner of supporting and adjusting the small rolls.

Fig. 13 is a section supplemental to that of Fig. 12, showing further details of construction of the same parts,

The primary straightening of the pipe is done through the action of a set of: primary rolls 1. These are mounted in a frame 10, and, as herein shown, are composed of three sets of parallel rolls arranged with two rolls in each set. These rolls are provided with eripheral grooves 12, which are made of a size to fit various sizes of pipe. The various sets of rolls are mountedso that each size oi"? groove is in alinement with the same size of grooves in the other rolls.

The lower set of rolls are fixedly powith T-head connections with the blocks 13,,

so that the bolts are free to turn with relation to these blocks, but have a positive connection therewith, so that they may raise or lower the blocks. The bolts are threaded in the horizontal bars 16 of the frame, which bars extend over the opposite ends of the posts, or bars, 1 of the frame. By this means the upper rolls of each set may be adjusted toward and from the lower rolls and thereby adjust somewhat the size of the opening between the rolls.

t is desirable that as many of these rolls as possible be positively driven. It also is essential that those rolls which are positively driven, all turn in directions conforming with the direction of movement of the pipe through the machine. To secure this it is necessary to use a somewhat complicated set of gears to drive the rolls. In the machine as illustrated, the power is gommunicated thereto for the driving of these rolls through a belt wheel 2. This belt wheel has secured thereto a pinion 20,which pinion meshes with the gear wheel 21, and this gear wheel has secured to turn therewith, a pinion 22. The pinion 22 meshes with a gear wheel 23 which is secured to the shaft 11 of the lower roll of the central set. This roll is therefore the first roll to receive power from the driving mechanism. Much of the above driving mechanism is only a speed reducing mechanism and may be replaced by anyjother suitable speed reducing mechanism.

The power is communicated from this central roll to the other rolls at the opposite side of the machine. A. side elevation of the gear train used is shown in Fig. 4. The central shaft 11 has two gears thereon. One gear, 24, is secured to turn with the shaft,

'while a second. gear, 25, is loose upon the shaft and, therefore, acts as an idler to connect the tw gears 26 and 27, carried by the shafts of the two end rolls of the series.

The gear at meshes with a gear 28, car

ried upon ashort shaft. A; companion gear 29 is also secured to this same shaft. The gear 29 meshes with a gear 30, which is se cured to the shaft 11 of the first pair of 7 rolls. Upon this same shaft of the first roll,

secured a gear 2'? which meshes with an idler gear 25, which tur s loose upon the shaft of the central roll. This gear 25, meshes with a gear .26, carried by the shaft of the last roll. "This provides forthe turning of all of the rolls of the lower set.

' The shaft of the center lower roll, which has the large wheel 23, secured thereto, also has a gear 3i secured thereto and meshing with wheel 32 of a pair of idlers 32 and 33, which are carried by short shafts located approximately, but not exactly, in alinement with the shafts of the last pair of rolls,'and supported by a plate 3, which is pivoted upon the shaft 11 which carries the wheels 23 and 31. It is provided with a handle 34 and means whereby the same may be secured in adjusted position. The adjustment required is slight and is shown as secured by means of a slot 35 in the plate and a clamping bolt 36.

The opposite gear 33 of this pair meshes with a gear 37 which is fixedly securer to the shaft 11 of the opposite one of the center set of rolls. The opposite roll of the outer set is driven in a similar manner through two gears 38 and 39, which are mounted upon a similar plate 3, which is adjustable through the use of a similar slot 35 and clamping bolt 36. The opposite gear 39 of this pair of idlers meshes with the gear 33. In this manner the opposite one of the first pair of rolls is driven. This provides for the driving of all the rolls except the opposite one of the last set. Provision might be made for driving this roll if it. were thought necessary, but I believe that this will not be necessary. This plan of driving the rolls insures that the direction of rotation is such as to act upon the pipe to pass the same forward through the machine.

At the receiving end of the machine, which is in front of tie first pair-of rolls 1, I provide a pair of guide rolls, having vertical axes, these being designed to prevent the pipe from extending'laterally by reason of bends therein, a sufiicient amount to jam the straightening rolls 1. .These guide rolls should be adjustable so as to be placed directly in front of any one of the set of.

grooves 12, in the straightening rolls. To provide for this the following construction has been employed.

Therolls 4 are provided with jour als at their ends which are secured in blocks 40. These blocks are mounted, one above and one below each roll, so as to be adjustable transversely of the machine, and in a direction parallel with the axes of the rolls 1. I. have herein shown these bars as each being a round shaft 42. They might, however, be of other shape. Upon these shafts are a set of spacers 41, these being shown as collars and of different lengths, sothat by shifting these into different positions the rolls 4: may be accurately placed in front of one of the set of pipe-receiving grooves in the rolls 1. The shafts 42 which support these rolls 4, are themselves supported in bracxets or bars 43, which are secured to, or form part 7 of, the main frame.

bends and kinks therein. It does not, however, complete or perfect the job of straightening the pipe, as it leaves them with a large number of small bends. in order to remove these from the pipe, I employ a second, or supplemental, straightening mechanism This is placed at the rear end of the machine and receives the pipe as it is delivered from the front end of the machine by the rolls 1.

This straightening mechanism is mounted upon a frame which is of a compound construction, in which is mounted a series of small rollers which are carried about and roll upon the periphery of the pipe. The construction of this device, as herein illustrated, is as follows.

At e ch end is a disk 5, these being each provided with a hollow trunnion 50, the holes in this trunnion being sufliciently large to accommodate the largest size of pipe which the machine is designed to handle.

The pipe P, after leaving the rolls 1, enters the adjacent trunnion 50, passes through the frame and out at the opposite trunnion 50. The peripheries of .the two heads 5 are connected by means of bars 6. These bars extend to the center of the length of the frame and are there each joined to a companion bar 6, as by means of flanges and bolts 61.

Intermediate of the two heads 5 are placed two disks 51, these being spaced from each other and from the heads 5, by approximately like distances. The two heads 5 and the intermediate disks 51, serve as supports and carrying means for the rollers 7, which act upon the pipe to straighten it. The rollers 7 are so spaced from each other that successive rollers of the series are spaced apart by an angle of 120.

As herein arranged, the first set of one end of the frame consists of two rollers spaced 120 apart. The next or central set, is a single roll 7, spaced 120 apart from the last roller and the last set is of two rollers spaced 120 apart and from the central roller. While this disposition of the rolls is the one which I prefer to use, it is, of course, possible to space these somewhat differently and yet to secure good results.

Each one of the heads 5 and 51 is provided with radially extending grooves 52, in which are mounted blocks ?0, each block having a hole therein to receivethe shaft of the rollers. These blocks 70, and the side walls of the slots 52, are so shaped that the block may slide radially of the axis and at the same time have a slight turning movement. This is secured by making the inner faces of the slots 52 surfaces of a cylinder, and the surface of block 70 surfaces of a cylinder of like diameter. in this manner angular adjustment of the rolls 7 may he secured.

Adjusting rods 75, which are screwthreaded, pass through nuts 76, which are carried by the outer ends of the disks 5 and 51. The inner ends of these threaded bars are provided with Tdieads 76, which enter correspondingly shaped grooves in the outer end of blocks 70. in consequence, the blocks 70 may be adjusted in or out by turning the rods 75.

Each of the rolls 7 consists of a tubular shell or cylinder 7 and an inner shaft "Z1. Each end of this shaft is cut down to enter the blocks 70. At one end this reduced portion, 72, is cylindrical, while at the other end the corresponding portion is slightly coned. The coned end 73 does not extend quite to the opposite side of the block 70. ii washer or plate, 7 1-,is placed against the outer side of the block 70 and a securing bolt 77 passes through thiswasher and enters the end of the coned journal 73. By tightening up on the bolt 77 the conical end '73 of the shaft may be drawn securely into place and the shaft held against turning.

The bars 6, which extend lengthwise of this revolving frame, are provided with transverse slots 62, and are also provided with means for engaging-the disks 51. By this means it is possible to adjust the dis s 51 angularly with respect to each other and the head disks 5. Tn doing so, the axial position of the rolls be set so that their axes, while approximately parallel with the axis of rotation of the frame, depart therefrom to a slight extent. As they pass over the surface of the pipe they, therefore, exert a slight forward feeding effect upon the pipe and also act more thoroughly to straighten the pipe;

By reason of this slight angular position of the rolls 7, the ends thereof are somewhat farther from the axis of rotation than is the center portion thereof. The center of the length of each of these rolls is slightly nearer to the axis of rotation than the end portion. In consequence, the rolls are eu abled to ride up on the kinks of the pipe and to bend the pipe inward and therefore to straighten it. By means of the adjustment features described, the angular pcsition of the rolls may be adjusted and, this he desired, the angular position of certain rolls may be made greater than the angular position of other rolls. 1

The journal. blocks 8, upon which the revolving frame is mounted to turn, are sup ported from or form a part of a U-shaped frame, which frame comprises a central connecting bar 80 and the end portion 8 which constitutes or carries the journal boxes.

The main frame has carried thereon two transversely extending bars 81, which form guide ways upon which the ill-shaped frame 80 may slide. These bars or plates are each provided with a slot 82, through which passes the clamping bolts 83. In thismannor the U-shaped frame may be adjusted transversly of the machine and secured at any desired point.

As means for securing this movement, I have shown a threaded shaft 84, which has a T-head connection at one end with the portion 80 of the U-frame and has a. threaded engagement with the outer end 85 of the bracket 86, which arm 86 is supported from the main frame. A wheel 87 on the outer end of the shaft 84. permits application of power thereto. for moving the frame 80.

As there will be certain different posi-' tions in which it is desired to secure this revolving frame, namely, the positions wherein. its aXis is in alinement with the grooves in the rollers 1, I have provided the plate 81 with a series of holes 88, which are engaged by a pin mounted to be raised and lowered in the frame 8. The pin 65 is mounted in a cylinder or sleeve, 66, and is normallyheld down by a spring, as 67. it is capable of being raised by reason ofthe engagement of one end of the bellcrailr lever 68, with a slot in the pin 65. 7 To hold this raised when it is desired to move the frame, a'stop plate 69 is shown as hinged to. the outer end of the lever 68 and when the lever is swung outward, this being the position in which the pin 65 is raised, this plate may be engaged with the casing 66, so as to hold the lever in that position.

I have shown this second portion of the machine as rotated independently of the rst part. This has been done by providone of the trunnions 50 with a gear wheel 55,; this being as herein shown a beveled gear, and meshing with a bevel pinion '56, which is Carried by a shaft 57, upon which shaft is mounted a driving pulley The shaft 57 is provided with a keyway'so that it may slide freely through the driving pulley 58, as theframe is adjusted transversely of the machine.

I have found that a machine of the above eons notion capableof taking pipes which 7 are badly bent and straightening these perfectly by one passage therethrough,'its capacity isstherefore very considerable, and makes it possible toeconomically straighten these pipes so that they may be used a second time. In consequence, it permitsthe salvage of a great deal of material which. 7 otherwise would have to be used as scraps.

What I claim as my invention is:

l. A pipe'straightening machine compris ing series of pipe straightening rolls havug their axes substantially at right angles with the'exes of the pipe, provided with grooves to receive pipes of different sizes and grouped to act first upon the pipe to roughly straighten it, a movable frame, a

second series offlrolls mounted in'said frame having their axes extending in approxi mately the same direction as the pipe and mounted to revolve thereabout, and means for adjusting the frame so that the rolls carried thereby will register with selected grooves of the first named rolls.

2. A pipe straightening machine comprising a series of pipe straightening rolls arranged in pairs and provided with coopera ing grooves to receive pipes of different sizes, through which pipes may be passed for preliminary straightening, a second series of rolls having their axes approximately parallel with the axes of the pipe, a frame for moun ing the latter rolls, means for shiftingand locking said frame so that its, rolls may receive pipes from the different grooves and means for carrying the said latter rolls bodily about the axes of the pipe and in engagement with the outer surface of the pipe.

3. A device for straightening pipe C031-- prising a frame having end members each provided with a hollow journal through which the pipe may pass and a radial head, bars connectin said heads, spiders carried by said bars in intermediate positions, and a series of rolls journaled in adjacent heads and spiders. 7

l. A device as in claim 3 in which the heads and spiders are radially slot ed and bloclrs held and guided in said slots and in which the rolls are journaled.

V 5. A device as in claim 3 in which the rolls are both angularly and radially adjustable relative to the heads and spiders.

6. A device as in claim 3, in which the bars have transverse slots and securing bolts within these slots by which the relative angular positions of the heads and spiders may be adjusted.

7. A pipe straightening machine comprising a series of preliminary straightening rolls provided with grooves of different sizes for the reception of the pipe, and a re- L volving frame having hollow journals through which the pipe passes after leaving the first rollers, said frame carrying rollers Vmounted upon axes substantially parallel with the direction of the pipe and means for adjusting said frame to aline its axis with selected grooves of the first rollers.

'8. A device as in claim 7 having a base frame, and axsecond ry frame in whichthe revolving roller-carrying frame is jor naled, said secondary frame and the base frame having guiding engagement permitting relative transverse movement and means for producing said transverse movement and for. securing said frames in adjusted position; 5

9. A pipe straightening machine comprising a plurality of pairs of rolls having par .allel axes and provided with a series of pipe receiving grooves of graduated sizes, means for turning tween them a id rolls to feed the pipe bes for adjusting the spacing of the F01 s of each pair and rolls at the receiving end of the series having their axes substantiali at right angles to the axes of said grooved rollers.

10. T12 i t"aightening machine, a

pipe straightening rolls frame and provided wit-l1 a series of pipe receiving grooves varying in size to conform to pi of different sizes, two bars placer. respe tively above and below the center plane of the rolls at the pipe receiving end of the device, two guide rolls, journal blocks for said guide rolls mounted for adju tment along said bars, and a set or spaci loloclrs reniovahly mounted on said bars and adapted to ill the space between said journal blocks and between said blocks and. the said frames.

11. A pioe straightening machine including a rotary carrier having hollow trunnions through which the pipes or rods pass, means for rotating the carrier, a single central roll and two pairs of end rolls mounted within the carrier and arranged to engage a pipe or red. the members of each pair of end rolls being spaced circuini'erentially from each other and from the central roll substantially 120 degrees.

12. A, pipe straightening machine including a rotary carrier having hollow trunnions through which the pipes or rods pass, means for rotating the carrier, a single central roll and two pairs of end rolls mounted within the carrier and arranged to engage a pipe or red. the members of each pair of end rolls being spaced circ'uinferentially from each other and from. the central roll substantially 120 degrees, said rolls being arranged at slight angle to the axis of a pipe or rod, and means -for adjusting the rolls to vary the angle oi? same with relation to the pipe or red.

13. A pipe straightening machine comprising a rotary carrier, central and end rolls arranged within the carrier and circumferentially spaced and arranged to engage a pipe or rod at an an le to the axis of the same and means for adjusting the rolls radially, said means including threaded sleeves mounted radially in the rotary carrier and radially arranged adjusting screws operating in the threaded sleeves tor moving the rolls bodily inwardly and outwardly.

14.. A pipe straig toning machine comprising a rotary carrier, central and end rolls arranged within the carrier and circumferentially spaced and arranged to engage apipe or rod at an angle to the axis of the same and means for adjusting the rolls radially, said means including threaded sleeves and adjusting screws operating in the threaded sleeves for moving the rolls bodily inwardly and outwardly and separate means for effecting a partial rotary adjustment of the rolls to arrange the same at different angles with relation to the axis of a pipe or rod.

15. A pipe straightening machine comprising a rotary carrier having hollow journals through which the pipe or rod passes, rotating rolls arranged within the carrier and circumferentially spaced around the pipe or rod approximately 120 degrees and capable of rotary adjustment to arrange them at different angles with relation to the axis of the pipe or rod, said rolls consisting of a pair located at the ends of the carrier and a single roll arranged centrally of the carrier and means for rotating the carrier.

16. A pipe straightening machine cornprising a rotary carrier having hollow journals, means for rotating the carrier, pairs of rotating rolls arranged within the ends of the carrier, the members of each pair being spaced circumferentially approximately 120 degrees and adapted to bear centrally against a pipe or rod, means for shitting the rolls upon an axis radial to the axis of rotation of the said carrier whereby they may be adjusted at various angles across the same and'a centrally arranged roll circumferentially spaced approximately 120 degrees from the said rolls and having a central bearing against the rod or pipe.

17. A pipe straightening machine comprising a rotary carrier, central and end rolls arranged within the carrier for engaging a pipe or rod and means for rotating the carrier, and means for shifting the rolls to arranged them at different angles to the axis of a pipe or rod..

18. A pipe straightening machine comprising a rotary carrier, central and end rollers arranged within the carrier the end rolls being arranged in pairs and circumferentially spaced from the central roll and means for rotating the carrier, and means for shitting the rolls on a radial axis to arrange them at diflerent angles to the axis of a pipe or red 19. A pipe straightening machine including a rotary carrier having central axial opening for the passage of a pipe or red, means forrotating the carrier, a plurality of rolls having engaging portions of unitorrn diameter mounted in the carrier and arranged to engage a pipe or rod at different angles to the longitudinal axis of the same, without changing the point of contact of the rolls and means for adjusting the rolls inwardly and outwardly ina direction radial to the pipe or rod without changing the pitch or angular relation of the rolls to the said pipe or rod.

20. A pipe straightening machine including a rotary carrier having a central axial opening for the passage of a pipeor rod, a pluiahty of rolls havlng engagmg portions of uniform diameter and mounted in the car-' rier and arranged to engage a pipe or rod at an angle to the longitudinal axls of the same, and means for ElClJHStlIlg the rolls to change the pitch or angular relation of the rells to the pipe or rod witheut adjusting the rolls radially. V

Signed at Tacoma, Pierce county, Washington, this 22d day of January, 1919.

JAMES 0. OLLARD. 

